Answer:
12x-39
Step-by-step explanation:
40-1=39
Answer: 6 x 10^12
Step-by-step explanation:
Move the decimal to the left so there is one non-zero digit number left of the decimal point. This will be the exponent placed on 10
Answer:
144
Step-by-step explanation:
54+90=144
144-90=54
90+54=144
144-54=90
Answer:
I am pretty sure that the answer is 18+2n
